removing the requirement for a server key in lb584 branch

coordinator/ProcessorServer.py

@@ -52,7 +52,7 @@ def process_pre_job_server_download(input_args: dict):
         if server_name == "":  # means the file is local
             data_is_ready = os.path.exists(full_file_path) and tarfile.is_tarfile(full_file_path)
         else:
-            cmd_check_file = ["ssh", "-i", config['ServerKey'], "-o", "StrictHostKeyChecking=no", server_name,
+            cmd_check_file = ["ssh", "-o", "StrictHostKeyChecking=no", server_name,
                               f"test -f {full_file_path} && tar -tzf {full_file_path} >/dev/null"]
             run_in_shell: bool = False